Add (optional) options to Run[Main]Application().

mojo/application/run_application_options_chromium.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_APPLICATION_RUN_APPLICATION_OPTIONS_CHROMIUM_H_
+#define MOJO_APPLICATION_RUN_APPLICATION_OPTIONS_CHROMIUM_H_
+
+#include "base/message_loop/message_loop.h"
+#include "mojo/public/cpp/application/run_application.h"
+
+namespace mojo {
+
+// Options for the "chromium" implementation of |RunMainApplication()| and
+// |RunApplication()|.
+class RunApplicationOptionsChromium : public RunApplicationOptions {
+ public:
+  explicit RunApplicationOptionsChromium(
+      base::MessageLoop::Type message_loop_type)
+      : message_loop_type(message_loop_type) {}
+  ~RunApplicationOptionsChromium() {}
+
+  base::MessageLoop::Type message_loop_type;
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_APPLICATION_RUN_APPLICATION_OPTIONS_CHROMIUM_H_